/*
 *  Copyright (C) 2011 JiangHongTiao <jjurco.sk@@@gmail.com>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package sk.lieskove301.jianghongtiao.liaad.prisoner.statistics.charts;

import sk.lieskove301.jianghongtiao.liaad.prisoner.statistics.AgentsTimelineUnit;

/**
 * Date of create: May 15, 2011
 *
 * @author JiangHongTiao <jjurco.sk_gmail.com>
 * @version 2011.0515
 */
public class SelectStat {

    public enum FUNC_TYPE {MAX, MEAN, TOTAL, A_COUNT};

    private FUNC_TYPE type;

    public SelectStat(FUNC_TYPE type) {
        this.type = type;
    }

    public static SelectStat getInstance(FUNC_TYPE type){
        return new SelectStat(type);
    }

    /**
     * return statistic by type
     * @param atu agents timeline unit
     * @param type type of statistic required
     * @return return value
     */
    public double stat(AgentsTimelineUnit atu){
        switch(type){
            case MAX: return atu.getMaxScore();
            case MEAN: return atu.getMeanScore();
            case TOTAL: return atu.getTotalScore();
            case A_COUNT: return atu.getCount();
        }
        throw new IllegalArgumentException("Shit happened!");
    }
}
